18 results about "Chain length" patented technology

The utility model provides a watch chain easy to disassemble and assemble, which comprises a plurality of mutually connected single chains, two adjacent single chains are respectively a first single chain and a second single chain, the first single chain and the second single chain are respectively provided with a concave part, the concave part of the first single chain and / or the second single chain is provided with an opening, and the opening is communicated with the opening. During assembly, the concave parts of the first single chain and the second single chain are pressed correspondingly, so that the opening is opened, and the first single chain is connected with the second single chain. According to the utility model, the two adjacent single chains can be quickly disassembled and assembled through the opening, so that the length of the watch chain can be adjusted, the single chains can be simply disassembled and assembled, and the single chains cannot be damaged in the disassembly and assembly process.

The invention relates to the related technical field of chain detection devices, and discloses a load pre-tensioning and chain length detection device for a chain, which comprises a system control panel integrated on the outer side of an operation machine table, a protection box body mounted above the operation machine table, a pre-tensioning detection mechanism mounted in the protection box body, and a chain length detection mechanism mounted in the pre-tensioning detection mechanism. The pre-tensioning detection mechanism comprises a vertical adjusting device, a transverse adjusting device and a slapping rebound detection device, and the vertical adjusting device and the transverse adjusting device are far away from each other so as to perform drawing detection on the strength of the chain; through the slapping rebound detection device, displacement data during chain drawing are utilized, a built-in sensing calculation system is combined, the chain length is automatically converted, compared with manual measurement, efficiency and precision are greatly improved, the hammering detection assembly drives a slapping rubber head to periodically beat when the chain moves, and the detection precision is improved by combining data of a pressure sensor and the movement distance. The elastic coefficient is accurately measured.

A method for removing PFAS from a feed solution includes: flowing a feed solution comprising PFAS of varying chain lengths through a feed channel; applying a voltage to a first electrode and a second electrode in a redox channel separated from the feed channel by a first SEM, the first electrode becoming positively charged and the second electrode becoming negatively charged, wherein the PFAS in the feed solution transfer through the first SEM into the redox channel toward the first electrode; and separating PFAS based on chain length, wherein long-chain PFAS adhere to the first electrode through hydrophobic and electrostatic interactions, and short-chain to ultra-short chain PFAS migrate toward the second electrode in the redox channel and pass through a second SEM into an accumulating channel, thereby creating a PFAS-concentrated solution in the accumulating channel.

The utility model discloses a chain-length-adjustable lock catch and an ornament. The chain-length-adjustable lock catch comprises a lock catch seat and an adjusting assembly, the top of the lock catch base is fixedly connected with the first end of the chain, a chain through groove penetrating in the length direction of the lock catch base is formed in the bottom of the lock catch base, and the second end of the chain penetrates through the chain through groove. The lock catch seat is provided with a mounting groove for mounting the adjusting assembly; after the adjusting piece is mounted in the mounting groove, the length direction of the adjusting piece is consistent with the length direction of the lock catch seat; the adjusting piece is provided with a pressing part, a connecting part and a clamping part which are connected in sequence; a rotating shaft through hole is formed in the connecting part in the width direction, the rotating shaft is rotatably installed in the rotating shaft through hole, and the two ends of the rotating shaft are fixed to a pair of side walls, arranged in the width direction, of the lock catch base respectively; one end of the reset piece abuts against the bottom of the mounting groove, and the other end abuts against the pressing part; according to the technical scheme, through the arrangement of the adjusting assembly, a wearer can adaptively adjust the chain of the ornament according to actual needs, the wearing comfort is improved, and the aesthetic feeling after wearing is improved.

The embodiment of the utility model provides a chain length measuring device, and relates to the technical field of chain detection. The chain length measuring device comprises a measuring platform, a length measuring assembly, a loading device and a chain connecting assembly, a fixed end block is arranged on the measuring platform, the length measuring assembly and the loading device are both slidably arranged on the measuring platform, and the loading device is connected with the length measuring assembly; the chain connecting assembly comprises a first chain connecting piece, a second chain connecting piece and a zero calibration connecting piece, and the first chain connecting piece is connected with the loading device; when the loading device is located at the zero calibration station, the zero calibration connecting piece is connected with the fixed end block and the first chain connecting piece at the same time; when the loading device is located at a length measuring station, the second chain connecting piece is connected with the fixed end block and one end of the chain at the same time, and the first chain connecting piece is connected with the other end of the chain; the loading device is used for simultaneously driving the length measuring assembly and the first chain connecting piece to move. The measuring efficiency and the measuring accuracy of the chain length can be improved.

A method for manufacturing a mining-grade constant-strength compact chain includes the following steps: determining the size specifications of the compact chain; selecting the diameter of the flat rings; processing test sample flat rings of the corresponding specifications; measuring the breaking load value of the test sample flat rings; calculating the diameter of the vertical rings based on the measured breaking load value of the test sample flat rings; processing flat ring blanks of the corresponding specifications, and simultaneously processing vertical rings of the corresponding specifications according to the calculated vertical ring diameter; chaining according to chain length or number of rings requirements; welding open flat rings to form a semi-finished chain; and processing the semi-finished chain to finally form the product. This invention, without changing the original compact chain's type, structure, and strength, uses raw materials with a vertical ring diameter smaller than the flat ring diameter. The resulting mining-grade compact chain has flat rings with the same tensile strength as vertical rings. During use, not only do the flat and vertical rings exhibit consistent stress deformation, but the structure is also more rational and the ductility is superior. This invention also provides a mining-grade constant-strength compact chain.

The utility model is suitable for the technical field of chain devices, and provides a chain device convenient to install, which comprises a protective shell sleeved outside a gear body, a chain body is wound outside the gear body, and the chain body is meshed with the gear body; the supporting rod is rotationally mounted on the inner wall of the protective shell; the supporting wheel is rotationally installed on the supporting rod and can make contact with the chain body, and a limiting groove used for clamping the chain body is formed in the supporting wheel. According to the chain device convenient to install, the chain can be supported and guided, the chain does not need to be supported and stabilized manually, the installation difficulty of the chain is reduced, meanwhile, flexibility is high, the chain can be assembled and disassembled, and therefore the length of the chain can be adjusted according to use requirements.

The utility model provides a chain adjusting and fastening device which comprises a chain length adjusting mechanism, a bidirectional fastening mechanism and a shell, an axial through hole is formed in the middle of the side wall of the shell, the chain length adjusting mechanism comprises a transmission part and a driving shaft, the transmission part is used for being connected with a chain in a meshed mode, and the transmission part is connected to the driving shaft in a sleeved mode. The two ends of the driving shaft are rotatably connected into the axial through hole and extend out of the axial through hole, the bidirectional fastening mechanism is connected to the outside of the side wall of the shell and is in transmission connection with the driving shaft, and the bidirectional fastening mechanism has a first limiting state and a second limiting state; wherein the first limiting state is used for limiting the driving shaft to rotate in the forward direction, and the second limiting state is used for limiting the driving shaft to rotate in the reverse direction. In this way, the chain length adjusting mechanism is driven to rotate so as to adapt to the required chain length, and then a good fixing effect can be achieved through the bidirectional fastening mechanism. And if callback is needed, adjustment can be conducted after the limitation of the rotation direction is changed, state switching is convenient, and the adjustment efficiency is improved.

The present invention provides an elevator compensating chain length adjustment device, an elevator, and a method for adjusting the length of an elevator compensating chain, which allows for a single fixing point for the elevator compensating chain in the elevator car or counterweight. [Solution] The elevator compensation chain length adjustment device is mounted along the length direction of the elevator compensation chain and includes a length adjustment section that extends and retracts in the length direction of the elevator compensation chain. With this configuration, the fixing point of the elevator compensation chain in the car or counterweight can be reduced to one location.

The present invention discloses a tree climbing and pruning machine with equal chain length that is adapted for driving and clamping, and belongs to the technical field of forestry equipment. The tree climbing and pruning machine includes: a power mechanism, including a driving device, a driving sprocket, and a transmission chain; a distance adjustment mechanism, including a left bracket, a right bracket, a sliding rod, an adjustment device, and an adjustment rod; a left wheel group, including a left wheel group bracket with a hollow structure, a first driven sprocket, and a first driven wheel; a right wheel group, including a right wheel group bracket with a hollow structure, a second driven wheel, and a second driven sprocket; and a pruning knife group, including a knife holder, a first fixed blade, and a second fixed blade. The first driven wheel and the second driven wheel of the present invention are respectively arranged on both sides of the tree trunk, and the driving sprocket is driven to rotate by the operation of the driving device, and then the first driven wheel and the second driven wheel are caused to roll by the rotation of the first driven sprocket and the second driven sprocket, thereby avoiding the problems of rollover caused by the existing pruning and tree climbing machine whose center of gravity is concentrated on one side, and the force during the climbing process is more reasonable.

The application discloses a long-service-life conveying chain and an assembling method, belongs to the technical field of chain transmission, and comprises alternating inner links and outer links, wherein an embedded sealing ring mechanism is arranged between the inner links and the outer links, and the assembling method comprises the steps of assembling two chains according to the physical law that the smaller the length error between the two chains is, the more consistent the synchronization of the two chains during conveying is, and the more consistent the stress conditions of the two chains are. The sealing ring adopts a high-low-lip double-X structure design and is embedded between the inner links and the outer links, so that the service life of the sealing ring and the maintenance period of the chain are improved, the problem of large whole-chain distortion of the sealing ring chain is solved, and the service life of the whole chain is improved. The application further discloses a matching assembling process of synchronously running chains, and the sectional matching assembling improves the problems of large chain length dispersion and uneven bearing of the chain, and improves the running stability of the chain as a whole.

The invention discloses an optimization method for anchor chain design in a single anchor chain system based on a quasi-static model, and belongs to the field of anchor chains, and the optimization method comprises the steps: S1, carrying out the length design of each section of anchor chain; s2, the displacement and force of each segmentation unit of the anchor chain are calculated, and a chain graph is drawn in the coordinate graph according to the coordinate point of each unit; s3, on the basis of the S2, the length of the anchor chain is not changed any more, after the water surface end of the anchor chain horizontally moves, the tension of the water surface end is repeatedly corrected, judgment is conducted according to the length before and after the rope is calculated, and extension and retraction of the water surface tension are determined; and S4, repeating the step until the whole system, reading the length of the anchor chain with the amplified result smaller than the initial anchor chain length and the length of the anchor chain with the reduced result larger than the initial anchor chain length, reading the iterative water surface tension at the moment, and taking the average value as the calculated water surface tension. According to the design scheme, on the basis of the calculation principle of single-section anchor chain design, all indexes such as the length of a single anchor chain finally meet the use requirements through continuous calculation and iteration.

The invention provides a method for calculating equivalent stiffness of a water tank mooring chain, which comprises the following steps of: 1, establishing a mooring chain detail finite element model according to structural mathematical models of mooring chains with different lengths, and 2, calculating axial elongation delta L of the mooring chains with different lengths under the action of a unit load F in the mooring chain detail finite element model; 3, calculating the equivalent sectional area A of the mooring chains with different lengths according to the axial elongation delta L; 4, fitting a fitting formula of the equivalent stiffness of the water tank mooring chain by taking the length L of the mooring chain as a horizontal coordinate and the equivalent sectional area A of the mooring chain as a vertical coordinate; 5, according to a fitting formula, the equivalent sectional area A of all the mooring chains under different mooring lengths is solved, and design input is provided for follow-up water tank finite element calculation.

The present invention provides an elevator compensating chain length adjustment device, an elevator, and a method for adjusting the length of an elevator compensating chain, which allows for a single fixing point for the elevator compensating chain in the elevator car or counterweight. [Solution] The elevator compensation chain length adjustment device is mounted along the length direction of the elevator compensation chain and includes a length adjustment section that extends and retracts in the length direction of the elevator compensation chain. With this configuration, the fixing point of the elevator compensation chain in the car or counterweight can be reduced to one location.

This invention belongs to the field of marine engineering technology and specifically discloses a floating dock mooring control method and system with automatically adjustable anchor chain length. The method includes: detecting the actual pretension force value of each anchor chain in the floating dock; subtracting the actual pretension force value from the optimal pretension force value and taking the absolute value to obtain the pretension force difference; identifying abnormal anchor chains based on the pretension force difference; and adjusting the length of the abnormal anchor chains according to the optimal pretension force value until the actual pretension force value of all anchor chains is within the allowable range of the optimal pretension force value. This invention, by automatically adjusting the anchor chain length, ensures that the pretension force of each anchor chain in the mooring system is within the optimal range, thereby improving the stability and safety of floating dock mooring, increasing the efficiency of shipbuilding and repair operations, extending the lifespan of the floating dock and its mooring equipment, and enhancing the environmental adaptability of the floating dock mooring system.

The utility model relates to the technical field of chain production, in particular to a chain length measuring device. The chain length measuring device comprises a base, a fixing assembly, a straightening assembly and a length measuring unit. The fixing assembly comprises a first connecting seat and a second connecting seat, the first connecting seat is fixedly connected with the base, the second connecting seat is movably connected with the base in the preset direction, and the first connecting seat and the second connecting seat are arranged at an interval in the preset direction; the first connecting seat and the second connecting seat are respectively used for connecting two ends of a to-be-tested chain; the straightening assembly is connected with the base and used for driving the second connecting base and the chain connected to the second connecting base to move in the preset direction so as to straighten the chain. The length measuring unit is connected with the base, the fixing assembly or the straightening assembly, and the length measuring unit is used for detecting the length of the chain in the straightening state. The chain length measuring device is simple in structure and convenient to measure, and can improve the chain length measuring precision of the chain, so that the delivery quality of the chain can be improved.

This utility model discloses a mining chain measuring device, relating to the field of measuring equipment technology. It includes a guide shaft housing and an inner guide shaft passing through the housing. One end of the inner guide shaft has a second measuring end, and the other end of the guide shaft housing has a first measuring end. A fixed grid is embedded in the surface of the inner guide shaft, and a digital display module is also mounted on the surface of the guide shaft housing. This mining chain measuring device, through the retractable inner guide shaft within the housing, can accurately measure the total length of multi-link chains, thus adapting to different specifications and models of mining chains. Combined with the fixed grid embedded in the inner guide shaft and the digital display module mounted on the guide shaft housing, it not only achieves precise measurement of chain length but also measures chain elongation, enabling timely detection of chain deformation during use, thereby improving the device's practicality.